git.sesse.net Git - mlt/blob - src/modules/avformat/consumer_avformat.c

   1 /*
   2  * consumer_avformat.c -- an encoder based on avformat
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  * Much code borrowed from ffmpeg.c: Copyright (c) 2000-2003 Fabrice Bellard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 // mlt Header files
  23 #include <framework/mlt_consumer.h>
  24 #include <framework/mlt_frame.h>
  25 #include <framework/mlt_profile.h>
  26 #include <framework/mlt_log.h>
  27 #include <framework/mlt_events.h>
  28
  29 // System header files
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <limits.h>
  34 #include <pthread.h>
  35 #include <sys/time.h>
  36 #include <unistd.h>
  37
  38 // avformat header files
  39 #include <libavformat/avformat.h>
  40 #include <libavformat/avio.h>
  41 #ifdef SWSCALE
  42 #include <libswscale/swscale.h>
  43 #endif
  44 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
  45 #include <libavutil/pixdesc.h>
  46 #endif
  47
  48 #if LIBAVUTIL_VERSION_INT < (50<<16)
  49 #define PIX_FMT_RGB32 PIX_FMT_RGBA32
  50 #define PIX_FMT_YUYV422 PIX_FMT_YUV422
  51 #endif
  52
  53 #if LIBAVCODEC_VERSION_MAJOR >= 53
  54 #include <libavutil/opt.h>
  55 #define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
  56 #define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
  57 #define PKT_FLAG_KEY AV_PKT_FLAG_KEY
  58 #else
  59 #include <libavcodec/opt.h>
  60 #endif
  61
  62 #define MAX_AUDIO_STREAMS (8)
  63 #define AUDIO_ENCODE_BUFFER_SIZE (48000 * 2 * MAX_AUDIO_STREAMS)
  64 #define AUDIO_BUFFER_SIZE (1024 * 42)
  65 #define VIDEO_BUFFER_SIZE (2048 * 1024)
  66
  67 void avformat_lock( );
  68 void avformat_unlock( );
  69
  70 //
  71 // This structure should be extended and made globally available in mlt
  72 //
  73
  74 typedef struct
  75 {
  76         int16_t *buffer;
  77         int size;
  78         int used;
  79         double time;
  80         int frequency;
  81         int channels;
  82 }
  83 *sample_fifo, sample_fifo_s;
  84
  85 sample_fifo sample_fifo_init( int frequency, int channels )
  86 {
  87         sample_fifo fifo = calloc( 1, sizeof( sample_fifo_s ) );
  88         fifo->frequency = frequency;
  89         fifo->channels = channels;
  90         return fifo;
  91 }
  92
  93 // sample_fifo_clear and check are temporarily aborted (not working as intended)
  94
  95 void sample_fifo_clear( sample_fifo fifo, double time )
  96 {
  97         int words = ( float )( time - fifo->time ) * fifo->frequency * fifo->channels;
  98         if ( ( int )( ( float )time * 100 ) < ( int )( ( float )fifo->time * 100 ) && fifo->used > words && words > 0 )
  99         {
 100                 memmove( fifo->buffer, &fifo->buffer[ words ], ( fifo->used - words ) * sizeof( int16_t ) );
 101                 fifo->used -= words;
 102                 fifo->time = time;
 103         }
 104         else if ( ( int )( ( float )time * 100 ) != ( int )( ( float )fifo->time * 100 ) )
 105         {
 106                 fifo->used = 0;
 107                 fifo->time = time;
 108         }
 109 }
 110
 111 void sample_fifo_check( sample_fifo fifo, double time )
 112 {
 113         if ( fifo->used == 0 )
 114         {
 115                 if ( ( int )( ( float )time * 100 ) < ( int )( ( float )fifo->time * 100 ) )
 116                         fifo->time = time;
 117         }
 118 }
 119
 120 void sample_fifo_append( sample_fifo fifo, int16_t *samples, int count )
 121 {
 122         if ( ( fifo->size - fifo->used ) < count )
 123         {
 124                 fifo->size += count * 5;
 125                 fifo->buffer = realloc( fifo->buffer, fifo->size * sizeof( int16_t ) );
 126         }
 127
 128         memcpy( &fifo->buffer[ fifo->used ], samples, count * sizeof( int16_t ) );
 129         fifo->used += count;
 130 }
 131
 132 int sample_fifo_used( sample_fifo fifo )
 133 {
 134         return fifo->used;
 135 }
 136
 137 int sample_fifo_fetch( sample_fifo fifo, int16_t *samples, int count )
 138 {
 139         if ( count > fifo->used )
 140                 count = fifo->used;
 141
 142         memcpy( samples, fifo->buffer, count * sizeof( int16_t ) );
 143         fifo->used -= count;
 144         memmove( fifo->buffer, &fifo->buffer[ count ], fifo->used * sizeof( int16_t ) );
 145
 146         fifo->time += ( double )count / fifo->channels / fifo->frequency;
 147
 148         return count;
 149 }
 150
 151 void sample_fifo_close( sample_fifo fifo )
 152 {
 153         free( fifo->buffer );
 154         free( fifo );
 155 }
 156
 157 // Forward references.
 158 static int consumer_start( mlt_consumer consumer );
 159 static int consumer_stop( mlt_consumer consumer );
 160 static int consumer_is_stopped( mlt_consumer consumer );
 161 static void *consumer_thread( void *arg );
 162 static void consumer_close( mlt_consumer consumer );
 163
 164 /** Initialise the consumer.
 165 */
 166
 167 mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
 168 {
 169         // Allocate the consumer
 170         mlt_consumer consumer = mlt_consumer_new( profile );
 171
 172         // If memory allocated and initialises without error
 173         if ( consumer != NULL )
 174         {
 175                 // Get properties from the consumer
 176                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 177
 178                 // Assign close callback
 179                 consumer->close = consumer_close;
 180
 181                 // Interpret the argument
 182                 if ( arg != NULL )
 183                         mlt_properties_set( properties, "target", arg );
 184
 185                 // sample and frame queue
 186                 mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
 187
 188                 // Audio options not fully handled by AVOptions
 189 #define QSCALE_NONE (-99999)
 190                 mlt_properties_set_int( properties, "aq", QSCALE_NONE );
 191
 192                 // Video options not fully handled by AVOptions
 193                 mlt_properties_set_int( properties, "dc", 8 );
 194
 195                 // Muxer options not fully handled by AVOptions
 196                 mlt_properties_set_double( properties, "muxdelay", 0.7 );
 197                 mlt_properties_set_double( properties, "muxpreload", 0.5 );
 198
 199                 // Ensure termination at end of the stream
 200                 mlt_properties_set_int( properties, "terminate_on_pause", 1 );
 201
 202                 // Default to separate processing threads for producer and consumer with no frame dropping!
 203                 mlt_properties_set_int( properties, "real_time", -1 );
 204                 mlt_properties_set_int( properties, "prefill", 1 );
 205
 206                 // Set up start/stop/terminated callbacks
 207                 consumer->start = consumer_start;
 208                 consumer->stop = consumer_stop;
 209                 consumer->is_stopped = consumer_is_stopped;
 210
 211                 mlt_events_register( properties, "consumer-fatal-error", NULL );
 212         }
 213
 214         // Return consumer
 215         return consumer;
 216 }
 217
 218 /** Start the consumer.
 219 */
 220
 221 static int consumer_start( mlt_consumer consumer )
 222 {
 223         // Get the properties
 224         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 225         int error = 0;
 226
 227         // Report information about available muxers and codecs as YAML Tiny
 228         char *s = mlt_properties_get( properties, "f" );
 229         if ( s && strcmp( s, "list" ) == 0 )
 230         {
 231                 mlt_properties doc = mlt_properties_new();
 232                 mlt_properties formats = mlt_properties_new();
 233                 char key[20];
 234                 AVOutputFormat *format = NULL;
 235
 236                 mlt_properties_set_data( properties, "f", formats, 0, (mlt_destructor) mlt_properties_close, NULL );
 237                 mlt_properties_set_data( doc, "formats", formats, 0, NULL, NULL );
 238                 while ( ( format = av_oformat_next( format ) ) )
 239                 {
 240                         snprintf( key, sizeof(key), "%d", mlt_properties_count( formats ) );
 241                         mlt_properties_set( formats, key, format->name );
 242                 }
 243                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 244                 mlt_properties_close( doc );
 245                 error = 1;
 246         }
 247         s = mlt_properties_get( properties, "acodec" );
 248         if ( s && strcmp( s, "list" ) == 0 )
 249         {
 250                 mlt_properties doc = mlt_properties_new();
 251                 mlt_properties codecs = mlt_properties_new();
 252                 char key[20];
 253                 AVCodec *codec = NULL;
 254
 255                 mlt_properties_set_data( properties, "acodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 256                 mlt_properties_set_data( doc, "audio_codecs", codecs, 0, NULL, NULL );
 257                 while ( ( codec = av_codec_next( codec ) ) )
 258                         if ( codec->encode && codec->type == CODEC_TYPE_AUDIO )
 259                         {
 260                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 261                                 mlt_properties_set( codecs, key, codec->name );
 262                         }
 263                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 264                 mlt_properties_close( doc );
 265                 error = 1;
 266         }
 267         s = mlt_properties_get( properties, "vcodec" );
 268         if ( s && strcmp( s, "list" ) == 0 )
 269         {
 270                 mlt_properties doc = mlt_properties_new();
 271                 mlt_properties codecs = mlt_properties_new();
 272                 char key[20];
 273                 AVCodec *codec = NULL;
 274
 275                 mlt_properties_set_data( properties, "vcodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 276                 mlt_properties_set_data( doc, "video_codecs", codecs, 0, NULL, NULL );
 277                 while ( ( codec = av_codec_next( codec ) ) )
 278                         if ( codec->encode && codec->type == CODEC_TYPE_VIDEO )
 279                         {
 280                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 281                                 mlt_properties_set( codecs, key, codec->name );
 282                         }
 283                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 284                 mlt_properties_close( doc );
 285                 error = 1;
 286         }
 287
 288         // Check that we're not already running
 289         if ( !error && !mlt_properties_get_int( properties, "running" ) )
 290         {
 291                 // Allocate a thread
 292                 pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
 293
 294                 // Get the width and height
 295                 int width = mlt_properties_get_int( properties, "width" );
 296                 int height = mlt_properties_get_int( properties, "height" );
 297
 298                 // Obtain the size property
 299                 char *size = mlt_properties_get( properties, "s" );
 300
 301                 // Interpret it
 302                 if ( size != NULL )
 303                 {
 304                         int tw, th;
 305                         if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
 306                         {
 307                                 width = tw;
 308                                 height = th;
 309                         }
 310                         else
 311                         {
 312                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Invalid size property %s - ignoring.\n", size );
 313                         }
 314                 }
 315
 316                 // Now ensure we honour the multiple of two requested by libavformat
 317                 width = ( width / 2 ) * 2;
 318                 height = ( height / 2 ) * 2;
 319                 mlt_properties_set_int( properties, "width", width );
 320                 mlt_properties_set_int( properties, "height", height );
 321
 322                 // We need to set these on the profile as well because the s property is
 323                 // an alias to mlt properties that correspond to profile settings.
 324                 mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
 325                 if ( profile )
 326                 {
 327                         profile->width = width;
 328                         profile->height = height;
 329                 }
 330
 331                 // Handle the ffmpeg command line "-r" property for frame rate
 332                 if ( mlt_properties_get( properties, "r" ) )
 333                 {
 334                         double frame_rate = mlt_properties_get_double( properties, "r" );
 335                         AVRational rational = av_d2q( frame_rate, 255 );
 336                         mlt_properties_set_int( properties, "frame_rate_num", rational.num );
 337                         mlt_properties_set_int( properties, "frame_rate_den", rational.den );
 338                         if ( profile )
 339                         {
 340                                 profile->frame_rate_num = rational.num;
 341                                 profile->frame_rate_den = rational.den;
 342                                 mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
 343                         }
 344                 }
 345
 346                 // Apply AVOptions that are synonyms for standard mlt_consumer options
 347                 if ( mlt_properties_get( properties, "ac" ) )
 348                         mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
 349                 if ( mlt_properties_get( properties, "ar" ) )
 350                         mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
 351
 352                 // Assign the thread to properties
 353                 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
 354
 355                 // Set the running state
 356                 mlt_properties_set_int( properties, "running", 1 );
 357
 358                 // Create the thread
 359                 pthread_create( thread, NULL, consumer_thread, consumer );
 360         }
 361         return error;
 362 }
 363
 364 /** Stop the consumer.
 365 */
 366
 367 static int consumer_stop( mlt_consumer consumer )
 368 {
 369         // Get the properties
 370         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 371
 372         // Check that we're running
 373         if ( mlt_properties_get_int( properties, "running" ) )
 374         {
 375                 // Get the thread
 376                 pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
 377
 378                 // Stop the thread
 379                 mlt_properties_set_int( properties, "running", 0 );
 380
 381                 // Wait for termination
 382                 pthread_join( *thread, NULL );
 383         }
 384
 385         return 0;
 386 }
 387
 388 /** Determine if the consumer is stopped.
 389 */
 390
 391 static int consumer_is_stopped( mlt_consumer consumer )
 392 {
 393         // Get the properties
 394         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 395         return !mlt_properties_get_int( properties, "running" );
 396 }
 397
 398 /** Process properties as AVOptions and apply to AV context obj
 399 */
 400
 401 static void apply_properties( void *obj, mlt_properties properties, int flags )
 402 {
 403         int i;
 404         int count = mlt_properties_count( properties );
 405         int alloc = 1;
 406
 407         for ( i = 0; i < count; i++ )
 408         {
 409                 const char *opt_name = mlt_properties_get_name( properties, i );
 410                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
 411
 412                 // If option not found, see if it was prefixed with a or v (-vb)
 413                 if ( !opt && (
 414                         opt_name[0] == 'v' && ( flags & AV_OPT_FLAG_VIDEO_PARAM ) ||
 415                         opt_name[0] == 'a' && ( flags & AV_OPT_FLAG_AUDIO_PARAM ) ) )
 416                         opt = av_find_opt( obj, ++opt_name, NULL, flags, flags );
 417                 // Apply option if found
 418                 if ( opt )
 419 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
 420                         av_set_string3( obj, opt_name, mlt_properties_get_value( properties, i), alloc, NULL );
 421 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
 422                         av_set_string2( obj, opt_name, mlt_properties_get_value( properties, i), alloc );
 423 #else
 424                         av_set_string( obj, opt_name, mlt_properties_get_value( properties, i) );
 425 #endif
 426         }
 427 }
 428
 429 /** Add an audio output stream
 430 */
 431
 432 static AVStream *add_audio_stream( mlt_consumer consumer, AVFormatContext *oc, AVCodec *codec, int channels )
 433 {
 434         // Get the properties
 435         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 436
 437         // Create a new stream
 438         AVStream *st = av_new_stream( oc, oc->nb_streams );
 439
 440         // If created, then initialise from properties
 441         if ( st != NULL )
 442         {
 443                 AVCodecContext *c = st->codec;
 444
 445                 // Establish defaults from AVOptions
 446 #if LIBAVCODEC_VERSION_MAJOR >= 53
 447                 avcodec_get_context_defaults3( c, codec );
 448 #else
 449                 avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
 450 #endif
 451
 452                 c->codec_id = codec->id;
 453                 c->codec_type = CODEC_TYPE_AUDIO;
 454                 c->sample_fmt = SAMPLE_FMT_S16;
 455
 456 #if 0 // disabled until some audio codecs are multi-threaded
 457                 // Setup multi-threading
 458                 int thread_count = mlt_properties_get_int( properties, "threads" );
 459                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 460                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 461                 if ( thread_count > 1 )
 462                         c->thread_count = thread_count;
 463 #endif
 464
 465                 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
 466                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 467
 468                 // Allow the user to override the audio fourcc
 469                 if ( mlt_properties_get( properties, "atag" ) )
 470                 {
 471                         char *tail = NULL;
 472                         char *arg = mlt_properties_get( properties, "atag" );
 473                         int tag = strtol( arg, &tail, 0);
 474                         if( !tail || *tail )
 475                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 476                         c->codec_tag = tag;
 477                 }
 478
 479                 // Process properties as AVOptions
 480                 char *apre = mlt_properties_get( properties, "apre" );
 481                 if ( apre )
 482                 {
 483                         mlt_properties p = mlt_properties_load( apre );
 484                         apply_properties( c, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 485                         mlt_properties_close( p );
 486                 }
 487                 apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 488
 489                 int audio_qscale = mlt_properties_get_int( properties, "aq" );
 490         if ( audio_qscale > QSCALE_NONE )
 491                 {
 492                         c->flags |= CODEC_FLAG_QSCALE;
 493                         c->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
 494                 }
 495
 496                 // Set parameters controlled by MLT
 497                 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
 498                 c->time_base = ( AVRational ){ 1, c->sample_rate };
 499                 c->channels = channels;
 500
 501                 if ( mlt_properties_get( properties, "alang" ) != NULL )
 502 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(43<<8)+0)
 503                         av_metadata_set2( &oc->metadata, "language", mlt_properties_get( properties, "alang" ), 0 );
 504 #else
 505
 506                         strncpy( st->language, mlt_properties_get( properties, "alang" ), sizeof( st->language ) );
 507 #endif
 508         }
 509         else
 510         {
 511                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for audio\n" );
 512         }
 513
 514         return st;
 515 }
 516
 517 static int open_audio( mlt_properties properties, AVFormatContext *oc, AVStream *st, int audio_outbuf_size, const char *codec_name )
 518 {
 519         // We will return the audio input size from here
 520         int audio_input_frame_size = 0;
 521
 522         // Get the context
 523         AVCodecContext *c = st->codec;
 524
 525         // Find the encoder
 526         AVCodec *codec;
 527         if ( codec_name )
 528                 codec = avcodec_find_encoder_by_name( codec_name );
 529         else
 530                 codec = avcodec_find_encoder( c->codec_id );
 531
 532 #if LIBAVCODEC_VERSION_MAJOR >= 53
 533         // Process properties as AVOptions on the AVCodec
 534         if ( codec && codec->priv_class )
 535         {
 536                 char *apre = mlt_properties_get( properties, "apre" );
 537                 if ( !c->priv_data && codec->priv_data_size )
 538                 {
 539                         c->priv_data = av_mallocz( codec->priv_data_size );
 540                         *(const AVClass **) c->priv_data = codec->priv_class;
 541 //                      av_opt_set_defaults( c );
 542                 }
 543                 if ( apre )
 544                 {
 545                         mlt_properties p = mlt_properties_load( apre );
 546                         apply_properties( c->priv_data, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 547                         mlt_properties_close( p );
 548                 }
 549                 apply_properties( c->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 550         }
 551 #endif
 552
 553         avformat_lock();
 554
 555         // Continue if codec found and we can open it
 556         if ( codec != NULL && avcodec_open( c, codec ) >= 0 )
 557         {
 558                 // ugly hack for PCM codecs (will be removed ASAP with new PCM
 559                 // support to compute the input frame size in samples
 560                 if ( c->frame_size <= 1 )
 561                 {
 562                         audio_input_frame_size = audio_outbuf_size / c->channels;
 563                         switch(st->codec->codec_id)
 564                         {
 565                                 case CODEC_ID_PCM_S16LE:
 566                                 case CODEC_ID_PCM_S16BE:
 567                                 case CODEC_ID_PCM_U16LE:
 568                                 case CODEC_ID_PCM_U16BE:
 569                                         audio_input_frame_size >>= 1;
 570                                         break;
 571                                 default:
 572                                         break;
 573                         }
 574                 }
 575                 else
 576                 {
 577                         audio_input_frame_size = c->frame_size;
 578                 }
 579
 580                 // Some formats want stream headers to be seperate (hmm)
 581                 if ( !strcmp( oc->oformat->name, "mp4" ) ||
 582                          !strcmp( oc->oformat->name, "mov" ) ||
 583                          !strcmp( oc->oformat->name, "3gp" ) )
 584                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 585         }
 586         else
 587         {
 588                 mlt_log_warning( NULL, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
 589         }
 590
 591         avformat_unlock();
 592
 593         return audio_input_frame_size;
 594 }
 595
 596 static void close_audio( AVFormatContext *oc, AVStream *st )
 597 {
 598         if ( st && st->codec )
 599         {
 600                 avformat_lock();
 601                 avcodec_close( st->codec );
 602                 avformat_unlock();
 603         }
 604 }
 605
 606 /** Add a video output stream
 607 */
 608
 609 static AVStream *add_video_stream( mlt_consumer consumer, AVFormatContext *oc, AVCodec *codec )
 610 {
 611         // Get the properties
 612         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 613
 614         // Create a new stream
 615         AVStream *st = av_new_stream( oc, oc->nb_streams );
 616
 617         if ( st != NULL )
 618         {
 619                 char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
 620                 AVCodecContext *c = st->codec;
 621
 622                 // Establish defaults from AVOptions
 623 #if LIBAVCODEC_VERSION_MAJOR >= 53
 624                 avcodec_get_context_defaults3( c, codec );
 625 #else
 626                 avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
 627 #endif
 628
 629                 c->codec_id = codec->id;
 630                 c->codec_type = CODEC_TYPE_VIDEO;
 631
 632                 // Setup multi-threading
 633                 int thread_count = mlt_properties_get_int( properties, "threads" );
 634                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 635                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 636                 if ( thread_count > 1 )
 637                         c->thread_count = thread_count;
 638
 639                 // Process properties as AVOptions
 640                 char *vpre = mlt_properties_get( properties, "vpre" );
 641                 if ( vpre )
 642                 {
 643                         mlt_properties p = mlt_properties_load( vpre );
 644 #ifdef AVDATADIR
 645                         if ( mlt_properties_count( p ) < 1 )
 646                         {
 647                                 AVCodec *codec = avcodec_find_encoder( c->codec_id );
 648                                 if ( codec )
 649                                 {
 650                                         char *path = malloc( strlen(AVDATADIR) + strlen(codec->name) + strlen(vpre) + strlen(".ffpreset") + 2 );
 651                                         strcpy( path, AVDATADIR );
 652                                         strcat( path, codec->name );
 653                                         strcat( path, "-" );
 654                                         strcat( path, vpre );
 655                                         strcat( path, ".ffpreset" );
 656
 657                                         mlt_properties_close( p );
 658                                         p = mlt_properties_load( path );
 659                                         if ( mlt_properties_count( p ) > 0 )
 660                                                 mlt_properties_debug( p, path, stderr );
 661                                         free( path );
 662                                 }
 663                         }
 664                         else
 665                         {
 666                                 mlt_properties_debug( p, vpre, stderr );
 667                         }
 668 #endif
 669                         apply_properties( c, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 670                         mlt_properties_close( p );
 671                 }
 672                 int colorspace = mlt_properties_get_int( properties, "colorspace" );
 673                 mlt_properties_set( properties, "colorspace", NULL );
 674                 apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 675                 mlt_properties_set_int( properties, "colorspace", colorspace );
 676
 677                 // Set options controlled by MLT
 678                 c->width = mlt_properties_get_int( properties, "width" );
 679                 c->height = mlt_properties_get_int( properties, "height" );
 680                 c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
 681                 c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
 682                 if ( st->time_base.den == 0 )
 683                         st->time_base = c->time_base;
 684 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
 685                 c->pix_fmt = pix_fmt ? av_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 686 #else
 687                 c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 688 #endif
 689
 690 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
 691                 switch ( colorspace )
 692                 {
 693                 case 170:
 694                         c->colorspace = AVCOL_SPC_SMPTE170M;
 695                         break;
 696                 case 240:
 697                         c->colorspace = AVCOL_SPC_SMPTE240M;
 698                         break;
 699                 case 470:
 700                         c->colorspace = AVCOL_SPC_BT470BG;
 701                         break;
 702                 case 601:
 703                         c->colorspace = ( 576 % c->height ) ? AVCOL_SPC_SMPTE170M : AVCOL_SPC_BT470BG;
 704                         break;
 705                 case 709:
 706                         c->colorspace = AVCOL_SPC_BT709;
 707                         break;
 708                 }
 709 #endif
 710
 711                 if ( mlt_properties_get( properties, "aspect" ) )
 712                 {
 713                         // "-aspect" on ffmpeg command line is display aspect ratio
 714                         double ar = mlt_properties_get_double( properties, "aspect" );
 715                         AVRational rational = av_d2q( ar, 255 );
 716
 717                         // Update the profile and properties as well since this is an alias
 718                         // for mlt properties that correspond to profile settings
 719                         mlt_properties_set_int( properties, "display_aspect_num", rational.num );
 720                         mlt_properties_set_int( properties, "display_aspect_den", rational.den );
 721                         mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
 722                         if ( profile )
 723                         {
 724                                 profile->display_aspect_num = rational.num;
 725                                 profile->display_aspect_den = rational.den;
 726                                 mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
 727                         }
 728
 729                         // Now compute the sample aspect ratio
 730                         rational = av_d2q( ar * c->height / c->width, 255 );
 731                         c->sample_aspect_ratio = rational;
 732                         // Update the profile and properties as well since this is an alias
 733                         // for mlt properties that correspond to profile settings
 734                         mlt_properties_set_int( properties, "sample_aspect_num", rational.num );
 735                         mlt_properties_set_int( properties, "sample_aspect_den", rational.den );
 736                         if ( profile )
 737                         {
 738                                 profile->sample_aspect_num = rational.num;
 739                                 profile->sample_aspect_den = rational.den;
 740                                 mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
 741                         }
 742                 }
 743                 else
 744                 {
 745                         c->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
 746                         c->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
 747                 }
 748 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 749                 st->sample_aspect_ratio = c->sample_aspect_ratio;
 750 #endif
 751
 752                 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
 753                 {
 754                         c->flags |= CODEC_FLAG_QSCALE;
 755                         st->quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
 756                 }
 757
 758                 // Allow the user to override the video fourcc
 759                 if ( mlt_properties_get( properties, "vtag" ) )
 760                 {
 761                         char *tail = NULL;
 762                         const char *arg = mlt_properties_get( properties, "vtag" );
 763                         int tag = strtol( arg, &tail, 0);
 764                         if( !tail || *tail )
 765                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 766                         c->codec_tag = tag;
 767                 }
 768
 769                 // Some formats want stream headers to be seperate
 770                 if ( oc->oformat->flags & AVFMT_GLOBALHEADER )
 771                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 772
 773                 // Translate these standard mlt consumer properties to ffmpeg
 774                 if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
 775                      mlt_properties_get_int( properties, "deinterlace" ) == 0 )
 776                 {
 777                         if ( ! mlt_properties_get( properties, "ildct" ) || mlt_properties_get_int( properties, "ildct" ) )
 778                                 c->flags |= CODEC_FLAG_INTERLACED_DCT;
 779                         if ( ! mlt_properties_get( properties, "ilme" ) || mlt_properties_get_int( properties, "ilme" ) )
 780                                 c->flags |= CODEC_FLAG_INTERLACED_ME;
 781                 }
 782
 783                 // parse the ratecontrol override string
 784                 int i;
 785                 char *rc_override = mlt_properties_get( properties, "rc_override" );
 786                 for ( i = 0; rc_override; i++ )
 787                 {
 788                         int start, end, q;
 789                         int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
 790                         if ( e != 3 )
 791                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Error parsing rc_override\n" );
 792                         c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
 793                         c->rc_override[i].start_frame = start;
 794                         c->rc_override[i].end_frame = end;
 795                         if ( q > 0 )
 796                         {
 797                                 c->rc_override[i].qscale = q;
 798                                 c->rc_override[i].quality_factor = 1.0;
 799                         }
 800                         else
 801                         {
 802                                 c->rc_override[i].qscale = 0;
 803                                 c->rc_override[i].quality_factor = -q / 100.0;
 804                         }
 805                         rc_override = strchr( rc_override, '/' );
 806                         if ( rc_override )
 807                                 rc_override++;
 808                 }
 809                 c->rc_override_count = i;
 810                 if ( !c->rc_initial_buffer_occupancy )
 811                         c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
 812                 c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
 813
 814                 // Setup dual-pass
 815                 i = mlt_properties_get_int( properties, "pass" );
 816                 if ( i == 1 )
 817                         c->flags |= CODEC_FLAG_PASS1;
 818                 else if ( i == 2 )
 819                         c->flags |= CODEC_FLAG_PASS2;
 820                 if ( codec->id != CODEC_ID_H264 && ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) ) )
 821                 {
 822                         char logfilename[1024];
 823                         FILE *f;
 824                         int size;
 825                         char *logbuffer;
 826
 827                         snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
 828                                 mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
 829                         if ( c->flags & CODEC_FLAG_PASS1 )
 830                         {
 831                                 f = fopen( logfilename, "w" );
 832                                 if ( !f )
 833                                         perror( logfilename );
 834                                 else
 835                                         mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
 836                         }
 837                         else
 838                         {
 839                                 /* read the log file */
 840                                 f = fopen( logfilename, "r" );
 841                                 if ( !f )
 842                                 {
 843                                         perror(logfilename);
 844                                 }
 845                                 else
 846                                 {
 847                                         mlt_properties_set( properties, "_logfilename", logfilename );
 848                                         fseek( f, 0, SEEK_END );
 849                                         size = ftell( f );
 850                                         fseek( f, 0, SEEK_SET );
 851                                         logbuffer = av_malloc( size + 1 );
 852                                         if ( !logbuffer )
 853                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate log buffer\n" );
 854                                         else
 855                                         {
 856                                                 size = fread( logbuffer, 1, size, f );
 857                                                 fclose( f );
 858                                                 logbuffer[size] = '\0';
 859                                                 c->stats_in = logbuffer;
 860                                         }
 861                                 }
 862                         }
 863                 }
 864         }
 865         else
 866         {
 867                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for video\n" );
 868         }
 869
 870         return st;
 871 }
 872
 873 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
 874 {
 875         // Allocate a frame
 876         AVFrame *picture = avcodec_alloc_frame();
 877
 878         // Determine size of the
 879         int size = avpicture_get_size(pix_fmt, width, height);
 880
 881         // Allocate the picture buf
 882         uint8_t *picture_buf = av_malloc(size);
 883
 884         // If we have both, then fill the image
 885         if ( picture != NULL && picture_buf != NULL )
 886         {
 887                 // Fill the frame with the allocated buffer
 888                 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
 889         }
 890         else
 891         {
 892                 // Something failed - clean up what we can
 893                 av_free( picture );
 894                 av_free( picture_buf );
 895                 picture = NULL;
 896         }
 897
 898         return picture;
 899 }
 900
 901 static int open_video( mlt_properties properties, AVFormatContext *oc, AVStream *st, const char *codec_name )
 902 {
 903         // Get the codec
 904         AVCodecContext *video_enc = st->codec;
 905
 906         // find the video encoder
 907         AVCodec *codec;
 908         if ( codec_name )
 909                 codec = avcodec_find_encoder_by_name( codec_name );
 910         else
 911                 codec = avcodec_find_encoder( video_enc->codec_id );
 912
 913 #if LIBAVCODEC_VERSION_MAJOR >= 53
 914         // Process properties as AVOptions on the AVCodec
 915         if ( codec && codec->priv_class )
 916         {
 917                 char *vpre = mlt_properties_get( properties, "vpre" );
 918                 if ( !video_enc->priv_data && codec->priv_data_size )
 919                 {
 920                         video_enc->priv_data = av_mallocz( codec->priv_data_size );
 921                         *(const AVClass **) video_enc->priv_data = codec->priv_class;
 922 //                      av_opt_set_defaults( video_enc );
 923                 }
 924                 if ( vpre )
 925                 {
 926                         mlt_properties p = mlt_properties_load( vpre );
 927                         apply_properties( video_enc->priv_data, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 928                         mlt_properties_close( p );
 929                 }
 930                 apply_properties( video_enc->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 931         }
 932 #endif
 933
 934         if( codec && codec->pix_fmts )
 935         {
 936                 const enum PixelFormat *p = codec->pix_fmts;
 937                 for( ; *p!=-1; p++ )
 938                 {
 939                         if( *p == video_enc->pix_fmt )
 940                                 break;
 941                 }
 942                 if( *p == -1 )
 943                         video_enc->pix_fmt = codec->pix_fmts[ 0 ];
 944         }
 945
 946         // Open the codec safely
 947         avformat_lock();
 948         int result = codec != NULL && avcodec_open( video_enc, codec ) >= 0;
 949         avformat_unlock();
 950
 951         return result;
 952 }
 953
 954 void close_video(AVFormatContext *oc, AVStream *st)
 955 {
 956         if ( st && st->codec )
 957         {
 958                 avformat_lock();
 959                 av_freep( &st->codec->stats_in );
 960                 avcodec_close(st->codec);
 961                 avformat_unlock();
 962         }
 963 }
 964
 965 static inline long time_difference( struct timeval *time1 )
 966 {
 967         struct timeval time2;
 968         gettimeofday( &time2, NULL );
 969         return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
 970 }
 971
 972 static int mlt_write(void *h, uint8_t *buf, int size)
 973 {
 974         mlt_properties properties = (mlt_properties) h;
 975         mlt_events_fire( properties, "avformat-write", buf, size, NULL );
 976         return 0;
 977 }
 978
 979 static void write_transmitter( mlt_listener listener, mlt_properties owner, mlt_service service, void **args )
 980 {
 981         listener( owner, service, (uint8_t*) args[0], (int) args[1] );
 982 }
 983
 984
 985 /** The main thread - the argument is simply the consumer.
 986 */
 987
 988 static void *consumer_thread( void *arg )
 989 {
 990         // Map the argument to the object
 991         mlt_consumer consumer = arg;
 992
 993         // Get the properties
 994         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 995
 996         // Get the terminate on pause property
 997         int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
 998         int terminated = 0;
 999
1000         // Determine if feed is slow (for realtime stuff)
1001         int real_time_output = mlt_properties_get_int( properties, "real_time" );
1002
1003         // Time structures
1004         struct timeval ante;
1005
1006         // Get the frame rate
1007         double fps = mlt_properties_get_double( properties, "fps" );
1008
1009         // Get width and height
1010         int width = mlt_properties_get_int( properties, "width" );
1011         int height = mlt_properties_get_int( properties, "height" );
1012         int img_width = width;
1013         int img_height = height;
1014
1015         // Get default audio properties
1016         mlt_audio_format aud_fmt = mlt_audio_s16;
1017         int channels = mlt_properties_get_int( properties, "channels" );
1018         int total_channels = channels;
1019         int frequency = mlt_properties_get_int( properties, "frequency" );
1020         int16_t *pcm = NULL;
1021         int samples = 0;
1022
1023         // AVFormat audio buffer and frame size
1024         int audio_outbuf_size = AUDIO_BUFFER_SIZE;
1025         uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
1026         int audio_input_frame_size = 0;
1027
1028         // AVFormat video buffer and frame count
1029         int frame_count = 0;
1030         int video_outbuf_size = VIDEO_BUFFER_SIZE;
1031         uint8_t *video_outbuf = av_malloc( video_outbuf_size );
1032
1033         // Used for the frame properties
1034         mlt_frame frame = NULL;
1035         mlt_properties frame_properties = NULL;
1036
1037         // Get the queues
1038         mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
1039         sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
1040
1041         // Need two av pictures for converting
1042         AVFrame *output = NULL;
1043         AVFrame *input = alloc_picture( PIX_FMT_YUYV422, width, height );
1044
1045         // For receiving images from an mlt_frame
1046         uint8_t *image;
1047         mlt_image_format img_fmt = mlt_image_yuv422;
1048
1049         // For receiving audio samples back from the fifo
1050         int16_t *audio_buf_1 = av_malloc( AUDIO_ENCODE_BUFFER_SIZE );
1051         int16_t *audio_buf_2 = NULL;
1052         int count = 0;
1053
1054         // Allocate the context
1055 #if (LIBAVFORMAT_VERSION_INT >= ((52<<16)+(26<<8)+0))
1056         AVFormatContext *oc = avformat_alloc_context( );
1057 #else
1058         AVFormatContext *oc = av_alloc_format_context( );
1059 #endif
1060
1061         // Streams
1062         AVStream *video_st = NULL;
1063         AVStream *audio_st[ MAX_AUDIO_STREAMS ];
1064
1065         // Time stamps
1066         double audio_pts = 0;
1067         double video_pts = 0;
1068
1069         // Frames dispatched
1070         long int frames = 0;
1071         long int total_time = 0;
1072
1073         // Determine the format
1074         AVOutputFormat *fmt = NULL;
1075         const char *filename = mlt_properties_get( properties, "target" );
1076         char *format = mlt_properties_get( properties, "f" );
1077         char *vcodec = mlt_properties_get( properties, "vcodec" );
1078         char *acodec = mlt_properties_get( properties, "acodec" );
1079         AVCodec *audio_codec = NULL;
1080         AVCodec *video_codec = NULL;
1081
1082         // Used to store and override codec ids
1083         int audio_codec_id;
1084         int video_codec_id;
1085
1086         // Misc
1087         char key[27];
1088         mlt_properties frame_meta_properties = mlt_properties_new();
1089
1090         // Initialize audio_st
1091         int i = MAX_AUDIO_STREAMS;
1092         while ( i-- )
1093                 audio_st[i] = NULL;
1094
1095         // Check for user selected format first
1096         if ( format != NULL )
1097 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1098                 fmt = guess_format( format, NULL, NULL );
1099 #else
1100                 fmt = av_guess_format( format, NULL, NULL );
1101 #endif
1102
1103         // Otherwise check on the filename
1104         if ( fmt == NULL && filename != NULL )
1105 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1106                 fmt = guess_format( NULL, filename, NULL );
1107 #else
1108                 fmt = av_guess_format( NULL, filename, NULL );
1109 #endif
1110
1111         // Otherwise default to mpeg
1112         if ( fmt == NULL )
1113 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1114                 fmt = guess_format( "mpeg", NULL, NULL );
1115 #else
1116                 fmt = av_guess_format( "mpeg", NULL, NULL );
1117 #endif
1118
1119         // We need a filename - default to stdout?
1120         if ( filename == NULL || !strcmp( filename, "" ) )
1121                 filename = "pipe:";
1122
1123         // Get the codec ids selected
1124         audio_codec_id = fmt->audio_codec;
1125         video_codec_id = fmt->video_codec;
1126
1127         // Check for audio codec overides
1128         if ( ( acodec && strcmp( acodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "an" ) )
1129                 audio_codec_id = CODEC_ID_NONE;
1130         else if ( acodec )
1131         {
1132                 audio_codec = avcodec_find_encoder_by_name( acodec );
1133                 if ( audio_codec )
1134                 {
1135                         audio_codec_id = audio_codec->id;
1136                         if ( audio_codec_id == CODEC_ID_AC3 && avcodec_find_encoder_by_name( "ac3_fixed" ) )
1137                         {
1138                                 mlt_properties_set( properties, "_acodec", "ac3_fixed" );
1139                                 acodec = mlt_properties_get( properties, "_acodec" );
1140                                 audio_codec = avcodec_find_encoder_by_name( acodec );
1141                         }
1142                 }
1143                 else
1144                 {
1145                         audio_codec_id = CODEC_ID_NONE;
1146                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "audio codec %s unrecognised - ignoring\n", acodec );
1147                 }
1148         }
1149         else
1150         {
1151                 audio_codec = avcodec_find_encoder( audio_codec_id );
1152         }
1153
1154         // Check for video codec overides
1155         if ( ( vcodec && strcmp( vcodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "vn" ) )
1156                 video_codec_id = CODEC_ID_NONE;
1157         else if ( vcodec )
1158         {
1159                 video_codec = avcodec_find_encoder_by_name( vcodec );
1160                 if ( video_codec )
1161                 {
1162                         video_codec_id = video_codec->id;
1163                 }
1164                 else
1165                 {
1166                         video_codec_id = CODEC_ID_NONE;
1167                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "video codec %s unrecognised - ignoring\n", vcodec );
1168                 }
1169         }
1170         else
1171         {
1172                 video_codec = avcodec_find_encoder( video_codec_id );
1173         }
1174
1175         // Write metadata
1176 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
1177         for ( i = 0; i < mlt_properties_count( properties ); i++ )
1178         {
1179                 char *name = mlt_properties_get_name( properties, i );
1180                 if ( name && !strncmp( name, "meta.attr.", 10 ) )
1181                 {
1182                         char *key = strdup( name + 10 );
1183                         char *markup = strrchr( key, '.' );
1184                         if ( markup && !strcmp( markup, ".markup") )
1185                         {
1186                                 markup[0] = '\0';
1187                                 if ( !strstr( key, ".stream." ) )
1188 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(43<<8)+0)
1189                                         av_metadata_set2( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
1190 #else
1191                                         av_metadata_set( &oc->metadata, key, mlt_properties_get_value( properties, i ) );
1192 #endif
1193                         }
1194                         free( key );
1195                 }
1196         }
1197 #else
1198         char *tmp = NULL;
1199         int metavalue;
1200
1201         tmp = mlt_properties_get( properties, "meta.attr.title.markup");
1202         if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp );
1203
1204         tmp = mlt_properties_get( properties, "meta.attr.comment.markup");
1205         if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp );
1206
1207         tmp = mlt_properties_get( properties, "meta.attr.author.markup");
1208         if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp );
1209
1210         tmp = mlt_properties_get( properties, "meta.attr.copyright.markup");
1211         if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp );
1212
1213         tmp = mlt_properties_get( properties, "meta.attr.album.markup");
1214         if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp );
1215
1216         metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup");
1217         if (metavalue != 0) oc->year = metavalue;
1218
1219         metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
1220         if (metavalue != 0) oc->track = metavalue;
1221 #endif
1222
1223         oc->oformat = fmt;
1224         snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
1225
1226         // Get a frame now, so we can set some AVOptions from properties.
1227         frame = mlt_consumer_rt_frame( consumer );
1228
1229         // Set the timecode from the MLT metadata if available.
1230         const char *timecode = mlt_properties_get( MLT_FRAME_PROPERTIES(frame), "meta.attr.vitc.markup" );
1231         if ( timecode && strcmp( timecode, "" ) )
1232         {
1233                 mlt_properties_set( properties, "timecode", timecode );
1234                 if ( strchr( timecode, ';' ) )
1235                         mlt_properties_set_int( properties, "drop_frame_timecode", 1 );
1236         }
1237
1238         // Add audio and video streams
1239         if ( video_codec_id != CODEC_ID_NONE )
1240                 video_st = add_video_stream( consumer, oc, video_codec );
1241         if ( audio_codec_id != CODEC_ID_NONE )
1242         {
1243                 int is_multi = 0;
1244
1245                 total_channels = 0;
1246                 // multitrack audio
1247                 for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
1248                 {
1249                         sprintf( key, "channels.%d", i );
1250                         int j = mlt_properties_get_int( properties, key );
1251                         if ( j )
1252                         {
1253                                 is_multi = 1;
1254                                 total_channels += j;
1255                                 audio_st[i] = add_audio_stream( consumer, oc, audio_codec, j );
1256                         }
1257                 }
1258                 // single track
1259                 if ( !is_multi )
1260                 {
1261                         audio_st[0] = add_audio_stream( consumer, oc, audio_codec, channels );
1262                         total_channels = channels;
1263                 }
1264         }
1265         mlt_properties_set_int( properties, "channels", total_channels );
1266
1267         // Set the parameters (even though we have none...)
1268         if ( av_set_parameters(oc, NULL) >= 0 )
1269         {
1270                 oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
1271                 oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
1272
1273                 // Process properties as AVOptions
1274                 char *fpre = mlt_properties_get( properties, "fpre" );
1275                 if ( fpre )
1276                 {
1277                         mlt_properties p = mlt_properties_load( fpre );
1278                         apply_properties( oc, p, AV_OPT_FLAG_ENCODING_PARAM );
1279 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1280                         if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
1281                                 apply_properties( oc->priv_data, p, AV_OPT_FLAG_ENCODING_PARAM );
1282 #endif
1283                         mlt_properties_close( p );
1284                 }
1285                 apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
1286 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1287                 if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
1288                         apply_properties( oc->priv_data, properties, AV_OPT_FLAG_ENCODING_PARAM );
1289 #endif
1290
1291                 if ( video_st && !open_video( properties, oc, video_st, vcodec? vcodec : NULL ) )
1292                         video_st = NULL;
1293                 for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
1294                 {
1295                         audio_input_frame_size = open_audio( properties, oc, audio_st[i], audio_outbuf_size,
1296                                 acodec? acodec : NULL );
1297                         if ( !audio_input_frame_size )
1298                                 audio_st[i] = NULL;
1299                 }
1300
1301                 // Setup custom I/O if redirecting
1302                 if ( mlt_properties_get_int( properties, "redirect" ) )
1303                 {
1304                         int buffer_size = 32768;
1305                         unsigned char *buffer = av_malloc( buffer_size );
1306 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1307                         AVIOContext* io = avio_alloc_context( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
1308 #else
1309                         ByteIOContext* io = av_alloc_put_byte( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
1310 #endif
1311                         if ( buffer && io )
1312                         {
1313                                 oc->pb = io;
1314 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1315                                 oc->flags |= AVFMT_FLAG_CUSTOM_IO;
1316 #endif
1317                                 mlt_properties_set_data( properties, "avio_buffer", buffer, buffer_size, av_free, NULL );
1318                                 mlt_properties_set_data( properties, "avio_context", io, 0, av_free, NULL );
1319                                 mlt_events_register( properties, "avformat-write", (mlt_transmitter) write_transmitter );
1320                         }
1321                         else
1322                         {
1323                                 av_free( buffer );
1324                                 mlt_log_error( MLT_CONSUMER_SERVICE(consumer), "failed to setup output redirection\n" );
1325                         }
1326                 }
1327                 // Open the output file, if needed
1328                 else if ( !( fmt->flags & AVFMT_NOFILE ) )
1329                 {
1330 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1331                         if ( avio_open( &oc->pb, filename, AVIO_FLAG_WRITE ) < 0 )
1332 #else
1333                         if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
1334 #endif
1335                         {
1336                                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not open '%s'\n", filename );
1337                                 mlt_properties_set_int( properties, "running", 0 );
1338                         }
1339                 }
1340
1341                 // Write the stream header.
1342                 if ( mlt_properties_get_int( properties, "running" ) )
1343                         av_write_header( oc );
1344         }
1345         else
1346         {
1347                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Invalid output format parameters\n" );
1348                 mlt_properties_set_int( properties, "running", 0 );
1349         }
1350
1351         // Allocate picture
1352         if ( video_st )
1353                 output = alloc_picture( video_st->codec->pix_fmt, width, height );
1354
1355         // Last check - need at least one stream
1356         if ( !audio_st[0] && !video_st )
1357                 mlt_properties_set_int( properties, "running", 0 );
1358
1359         // Get the starting time (can ignore the times above)
1360         gettimeofday( &ante, NULL );
1361
1362         // Loop while running
1363         while( mlt_properties_get_int( properties, "running" ) &&
1364                ( !terminated || ( video_st && mlt_deque_count( queue ) ) ) )
1365         {
1366                 if ( !frame )
1367                         frame = mlt_consumer_rt_frame( consumer );
1368
1369                 // Check that we have a frame to work with
1370                 if ( frame != NULL )
1371                 {
1372                         // Increment frames dispatched
1373                         frames ++;
1374
1375                         // Default audio args
1376                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1377
1378                         // Check for the terminated condition
1379                         terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
1380
1381                         // Get audio and append to the fifo
1382                         if ( !terminated && audio_st[0] )
1383                         {
1384                                 samples = mlt_sample_calculator( fps, frequency, count ++ );
1385                                 channels = total_channels;
1386                                 mlt_frame_get_audio( frame, (void**) &pcm, &aud_fmt, &frequency, &channels, &samples );
1387
1388                                 // Save the audio channel remap properties for later
1389                                 mlt_properties_pass( frame_meta_properties, frame_properties, "meta.map.audio." );
1390
1391                                 // Create the fifo if we don't have one
1392                                 if ( fifo == NULL )
1393                                 {
1394                                         fifo = sample_fifo_init( frequency, channels );
1395                                         mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
1396                                 }
1397
1398                                 // Silence if not normal forward speed
1399                                 if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
1400                                         memset( pcm, 0, samples * channels * 2 );
1401
1402                                 // Append the samples
1403                                 sample_fifo_append( fifo, pcm, samples * channels );
1404                                 total_time += ( samples * 1000000 ) / frequency;
1405
1406                                 if ( !video_st )
1407                                         mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1408                         }
1409
1410                         // Encode the image
1411                         if ( !terminated && video_st )
1412                                 mlt_deque_push_back( queue, frame );
1413                         else
1414                                 mlt_frame_close( frame );
1415                         frame = NULL;
1416                 }
1417
1418                 // While we have stuff to process, process...
1419                 while ( 1 )
1420                 {
1421                         // Write interleaved audio and video frames
1422                         if ( !video_st || ( video_st && audio_st[0] && audio_pts < video_pts ) )
1423                         {
1424                                 // Write audio
1425                                 if ( ( video_st && terminated ) || ( channels * audio_input_frame_size ) < sample_fifo_used( fifo ) )
1426                                 {
1427                                         int j = 0; // channel offset into interleaved source buffer
1428                                         int n = FFMIN( FFMIN( channels * audio_input_frame_size, sample_fifo_used( fifo ) ), AUDIO_ENCODE_BUFFER_SIZE );
1429
1430                                         // Get the audio samples
1431                                         if ( n > 0 )
1432                                         {
1433                                                 sample_fifo_fetch( fifo, audio_buf_1, n );
1434                                         }
1435                                         else if ( audio_codec_id == CODEC_ID_VORBIS && terminated )
1436                                         {
1437                                                 // This prevents an infinite loop when some versions of vorbis do not
1438                                                 // increment pts when encoding silence.
1439                                                 audio_pts = video_pts;
1440                                                 break;
1441                                         }
1442                                         else
1443                                         {
1444                                                 memset( audio_buf_1, 0, AUDIO_ENCODE_BUFFER_SIZE );
1445                                         }
1446                                         samples = n / channels;
1447
1448                                         // For each output stream
1449                                         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i] && j < total_channels; i++ )
1450                                         {
1451                                                 AVStream *stream = audio_st[i];
1452                                                 AVCodecContext *codec = stream->codec;
1453                                                 AVPacket pkt;
1454
1455                                                 av_init_packet( &pkt );
1456
1457                                                 // Optimized for single track and no channel remap
1458                                                 if ( !audio_st[1] && !mlt_properties_count( frame_meta_properties ) )
1459                                                 {
1460                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, audio_buf_1 );
1461                                                 }
1462                                                 else
1463                                                 {
1464                                                         // Extract the audio channels according to channel mapping
1465                                                         int dest_offset = 0; // channel offset into interleaved dest buffer
1466
1467                                                         // Get the number of channels for this stream
1468                                                         sprintf( key, "channels.%d", i );
1469                                                         int current_channels = mlt_properties_get_int( properties, key );
1470
1471                                                         // Clear the destination audio buffer.
1472                                                         if ( !audio_buf_2 )
1473                                                                 audio_buf_2 = av_mallocz( AUDIO_ENCODE_BUFFER_SIZE );
1474                                                         else
1475                                                                 memset( audio_buf_2, 0, AUDIO_ENCODE_BUFFER_SIZE );
1476
1477                                                         // For each output channel
1478                                                         while ( dest_offset < current_channels && j < total_channels )
1479                                                         {
1480                                                                 int map_start = -1, map_channels = 0;
1481                                                                 int source_offset = 0;
1482                                                                 int k;
1483
1484                                                                 // Look for a mapping that starts at j
1485                                                                 for ( k = 0; k < (MAX_AUDIO_STREAMS * 2) && map_start != j; k++ )
1486                                                                 {
1487                                                                         sprintf( key, "%d.channels", k );
1488                                                                         map_channels = mlt_properties_get_int( frame_meta_properties, key );
1489                                                                         sprintf( key, "%d.start", k );
1490                                                                         if ( mlt_properties_get( frame_meta_properties, key ) )
1491                                                                                 map_start = mlt_properties_get_int( frame_meta_properties, key );
1492                                                                         if ( map_start != j )
1493                                                                                 source_offset += map_channels;
1494                                                                 }
1495
1496                                                                 // If no mapping
1497                                                                 if ( map_start != j )
1498                                                                 {
1499                                                                         map_channels = current_channels;
1500                                                                         source_offset = j;
1501                                                                 }
1502
1503                                                                 // Copy samples if source offset valid
1504                                                                 if ( source_offset < channels )
1505                                                                 {
1506                                                                         // Interleave the audio buffer with the # channels for this stream/mapping.
1507                                                                         for ( k = 0; k < map_channels; k++, j++, source_offset++, dest_offset++ )
1508                                                                         {
1509                                                                                 int16_t *src = audio_buf_1 + source_offset;
1510                                                                                 int16_t *dest = audio_buf_2 + dest_offset;
1511                                                                                 int s = samples + 1;
1512
1513                                                                                 while ( --s ) {
1514                                                                                         *dest = *src;
1515                                                                                         dest += current_channels;
1516                                                                                         src += channels;
1517                                                                                 }
1518                                                                         }
1519                                                                 }
1520                                                                 // Otherwise silence
1521                                                                 else
1522                                                                 {
1523                                                                         j += current_channels;
1524                                                                         dest_offset += current_channels;
1525                                                                 }
1526                                                         }
1527                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, audio_buf_2 );
1528                                                 }
1529
1530                                                 // Write the compressed frame in the media file
1531                                                 if ( codec->coded_frame && codec->coded_frame->pts != AV_NOPTS_VALUE )
1532                                                 {
1533                                                         pkt.pts = av_rescale_q( codec->coded_frame->pts, codec->time_base, stream->time_base );
1534                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio stream %d pkt pts %"PRId64" frame pts %"PRId64,
1535                                                                 stream->index, pkt.pts, codec->coded_frame->pts );
1536                                                 }
1537                                                 pkt.flags |= PKT_FLAG_KEY;
1538                                                 pkt.stream_index = stream->index;
1539                                                 pkt.data = audio_outbuf;
1540
1541                                                 if ( pkt.size > 0 )
1542                                                 {
1543                                                         if ( av_interleaved_write_frame( oc, &pkt ) )
1544                                                         {
1545                                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing audio frame\n" );
1546                                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1547                                                                 goto on_fatal_error;
1548                                                         }
1549                                                 }
1550
1551                                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", codec->frame_size );
1552                                                 if ( i == 0 )
1553                                                 {
1554                                                         audio_pts = (double)stream->pts.val * av_q2d( stream->time_base );
1555                                                 }
1556                                         }
1557                                 }
1558                                 else
1559                                 {
1560                                         break;
1561                                 }
1562                         }
1563                         else if ( video_st )
1564                         {
1565                                 // Write video
1566                                 if ( mlt_deque_count( queue ) )
1567                                 {
1568                                         int out_size, ret = 0;
1569                                         AVCodecContext *c;
1570
1571                                         frame = mlt_deque_pop_front( queue );
1572                                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1573
1574                                         c = video_st->codec;
1575
1576                                         if ( mlt_properties_get_int( frame_properties, "rendered" ) )
1577                                         {
1578                                                 int i = 0;
1579                                                 uint8_t *p;
1580                                                 uint8_t *q;
1581
1582                                                 mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
1583
1584                                                 q = image;
1585
1586                                                 // Convert the mlt frame to an AVPicture
1587                                                 for ( i = 0; i < height; i ++ )
1588                                                 {
1589                                                         p = input->data[ 0 ] + i * input->linesize[ 0 ];
1590                                                         memcpy( p, q, width * 2 );
1591                                                         q += width * 2;
1592                                                 }
1593
1594                                                 // Do the colour space conversion
1595 #ifdef SWSCALE
1596                                                 int flags = SWS_BILINEAR;
1597 #ifdef USE_MMX
1598                                                 flags |= SWS_CPU_CAPS_MMX;
1599 #endif
1600 #ifdef USE_SSE
1601                                                 flags |= SWS_CPU_CAPS_MMX2;
1602 #endif
1603                                                 struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUYV422,
1604                                                         width, height, video_st->codec->pix_fmt, flags, NULL, NULL, NULL);
1605                                                 sws_scale( context, (const uint8_t* const*) input->data, input->linesize, 0, height,
1606                                                         output->data, output->linesize);
1607                                                 sws_freeContext( context );
1608 #else
1609                                                 img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUYV422, width, height );
1610 #endif
1611
1612                                                 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1613
1614                                                 // Apply the alpha if applicable
1615                                                 if ( video_st->codec->pix_fmt == PIX_FMT_RGB32 )
1616                                                 {
1617                                                         uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
1618                                                         register int n;
1619
1620                                                         for ( i = 0; i < height; i ++ )
1621                                                         {
1622                                                                 n = ( width + 7 ) / 8;
1623                                                                 p = output->data[ 0 ] + i * output->linesize[ 0 ] + 3;
1624
1625                                                                 switch( width % 8 )
1626                                                                 {
1627                                                                         case 0: do { *p = *alpha++; p += 4;
1628                                                                         case 7:          *p = *alpha++; p += 4;
1629                                                                         case 6:          *p = *alpha++; p += 4;
1630                                                                         case 5:          *p = *alpha++; p += 4;
1631                                                                         case 4:          *p = *alpha++; p += 4;
1632                                                                         case 3:          *p = *alpha++; p += 4;
1633                                                                         case 2:          *p = *alpha++; p += 4;
1634                                                                         case 1:          *p = *alpha++; p += 4;
1635                                                                                         }
1636                                                                                         while( --n );
1637                                                                 }
1638                                                         }
1639                                                 }
1640                                         }
1641
1642                                         if (oc->oformat->flags & AVFMT_RAWPICTURE)
1643                                         {
1644                                                 // raw video case. The API will change slightly in the near future for that
1645                                                 AVPacket pkt;
1646                                                 av_init_packet(&pkt);
1647
1648                                                 pkt.flags |= PKT_FLAG_KEY;
1649                                                 pkt.stream_index= video_st->index;
1650                                                 pkt.data= (uint8_t *)output;
1651                                                 pkt.size= sizeof(AVPicture);
1652
1653                                                 ret = av_write_frame(oc, &pkt);
1654                                                 video_pts += c->frame_size;
1655                                         }
1656                                         else
1657                                         {
1658                                                 // Set the quality
1659                                                 output->quality = video_st->quality;
1660
1661                                                 // Set frame interlace hints
1662                                                 output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1663                                                 output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1664                                                 output->pts = frame_count;
1665
1666                                                 // Encode the image
1667                                                 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
1668
1669                                                 // If zero size, it means the image was buffered
1670                                                 if ( out_size > 0 )
1671                                                 {
1672                                                         AVPacket pkt;
1673                                                         av_init_packet( &pkt );
1674
1675                                                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1676                                                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1677                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pkt pts %"PRId64" frame pts %"PRId64, pkt.pts, c->coded_frame->pts );
1678                                                         if( c->coded_frame && c->coded_frame->key_frame )
1679                                                                 pkt.flags |= PKT_FLAG_KEY;
1680                                                         pkt.stream_index= video_st->index;
1681                                                         pkt.data= video_outbuf;
1682                                                         pkt.size= out_size;
1683
1684                                                         // write the compressed frame in the media file
1685                                                         ret = av_interleaved_write_frame(oc, &pkt);
1686                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", c->frame_size );
1687                                                         video_pts = (double)video_st->pts.val * av_q2d( video_st->time_base );
1688
1689                                                         // Dual pass logging
1690                                                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
1691                                                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1692                                                 }
1693                                                 else if ( out_size < 0 )
1694                                                 {
1695                                                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error with video encode %d\n", frame_count );
1696                                                 }
1697                                         }
1698                                         frame_count++;
1699                                         if ( ret )
1700                                         {
1701                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing video frame\n" );
1702                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1703                                                 goto on_fatal_error;
1704                                         }
1705                                         mlt_frame_close( frame );
1706                                         frame = NULL;
1707                                 }
1708                                 else
1709                                 {
1710                                         break;
1711                                 }
1712                         }
1713                         if ( audio_st[0] )
1714                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio pts %"PRId64" (%f) ", audio_st[0]->pts.val, audio_pts );
1715                         if ( video_st )
1716                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pts %"PRId64" (%f) ", video_st->pts.val, video_pts );
1717                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "\n" );
1718                 }
1719
1720                 if ( real_time_output == 1 && frames % 2 == 0 )
1721                 {
1722                         long passed = time_difference( &ante );
1723                         if ( fifo != NULL )
1724                         {
1725                                 long pending = ( ( ( long )sample_fifo_used( fifo ) * 1000 ) / frequency ) * 1000;
1726                                 passed -= pending;
1727                         }
1728                         if ( passed < total_time )
1729                         {
1730                                 long total = ( total_time - passed );
1731                                 struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 };
1732                                 nanosleep( &t, NULL );
1733                         }
1734                 }
1735         }
1736
1737         // Flush the encoder buffers
1738         if ( real_time_output <= 0 )
1739         {
1740                 // Flush audio fifo
1741                 // TODO: flush all audio streams
1742                 if ( audio_st[0] && audio_st[0]->codec->frame_size > 1 ) for (;;)
1743                 {
1744                         AVCodecContext *c = audio_st[0]->codec;
1745                         AVPacket pkt;
1746                         av_init_packet( &pkt );
1747                         pkt.size = 0;
1748
1749                         if ( /*( c->capabilities & CODEC_CAP_SMALL_LAST_FRAME ) &&*/
1750                                 ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) )
1751                         {
1752                                 sample_fifo_fetch( fifo, audio_buf_1, channels * audio_input_frame_size );
1753                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, audio_buf_1 );
1754                         }
1755                         if ( pkt.size <= 0 )
1756                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
1757                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing audio size %d\n", pkt.size );
1758                         if ( pkt.size <= 0 )
1759                                 break;
1760
1761                         // Write the compressed frame in the media file
1762                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1763                                 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st[0]->time_base );
1764                         pkt.flags |= PKT_FLAG_KEY;
1765                         pkt.stream_index = audio_st[0]->index;
1766                         pkt.data = audio_outbuf;
1767                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1768                         {
1769                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing flushed audio frame\n" );
1770                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1771                                 goto on_fatal_error;
1772                         }
1773                 }
1774
1775                 // Flush video
1776                 if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;)
1777                 {
1778                         AVCodecContext *c = video_st->codec;
1779                         AVPacket pkt;
1780                         av_init_packet( &pkt );
1781
1782                         // Encode the image
1783                         pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
1784                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing video size %d\n", pkt.size );
1785                         if ( pkt.size <= 0 )
1786                                 break;
1787
1788                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1789                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1790                         if( c->coded_frame && c->coded_frame->key_frame )
1791                                 pkt.flags |= PKT_FLAG_KEY;
1792                         pkt.stream_index = video_st->index;
1793                         pkt.data = video_outbuf;
1794
1795                         // write the compressed frame in the media file
1796                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1797                         {
1798                                 mlt_log_fatal( MLT_CONSUMER_SERVICE(consumer), "error writing flushed video frame\n" );
1799                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1800                                 goto on_fatal_error;
1801                         }
1802                         // Dual pass logging
1803                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
1804                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1805                 }
1806         }
1807
1808 on_fatal_error:
1809
1810         // Write the trailer, if any
1811         av_write_trailer( oc );
1812
1813         // close each codec
1814         if ( video_st )
1815                 close_video(oc, video_st);
1816         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
1817                 close_audio( oc, audio_st[i] );
1818
1819         // Free the streams
1820         for ( i = 0; i < oc->nb_streams; i++ )
1821                 av_freep( &oc->streams[i] );
1822
1823         // Close the output file
1824         if ( !( fmt->flags & AVFMT_NOFILE ) )
1825         {
1826 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1827                 if ( !mlt_properties_get_int( properties, "redirect" ) )
1828                         avio_close( oc->pb );
1829 #elif LIBAVFORMAT_VERSION_MAJOR >= 52
1830                 url_fclose( oc->pb );
1831 #else
1832                 url_fclose( &oc->pb );
1833 #endif
1834         }
1835
1836         // Clean up input and output frames
1837         if ( output )
1838                 av_free( output->data[0] );
1839         av_free( output );
1840         av_free( input->data[0] );
1841         av_free( input );
1842         av_free( video_outbuf );
1843         av_free( audio_buf_1 );
1844         av_free( audio_buf_2 );
1845
1846         // Free the stream
1847         av_free( oc );
1848
1849         // Just in case we terminated on pause
1850         mlt_properties_set_int( properties, "running", 0 );
1851
1852         mlt_consumer_stopped( consumer );
1853         mlt_properties_close( frame_meta_properties );
1854
1855         if ( mlt_properties_get_int( properties, "pass" ) > 1 )
1856         {
1857                 // Remove the dual pass log file
1858                 if ( mlt_properties_get( properties, "_logfilename" ) )
1859                         remove( mlt_properties_get( properties, "_logfilename" ) );
1860
1861                 // Remove the x264 dual pass logs
1862                 char *cwd = getcwd( NULL, 0 );
1863                 const char *file = "x264_2pass.log";
1864                 char *full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1865                 sprintf( full, "%s/%s", cwd, file );
1866                 remove( full );
1867                 free( full );
1868                 file = "x264_2pass.log.temp";
1869                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1870                 sprintf( full, "%s/%s", cwd, file );
1871                 remove( full );
1872                 free( full );
1873                 file = "x264_2pass.log.mbtree";
1874                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1875                 sprintf( full, "%s/%s", cwd, file );
1876                 remove( full );
1877                 free( full );
1878                 free( cwd );
1879                 remove( "x264_2pass.log.temp" );
1880         }
1881
1882         while ( ( frame = mlt_deque_pop_back( queue ) ) )
1883                 mlt_frame_close( frame );
1884
1885         return NULL;
1886 }
1887
1888 /** Close the consumer.
1889 */
1890
1891 static void consumer_close( mlt_consumer consumer )
1892 {
1893         // Stop the consumer
1894         mlt_consumer_stop( consumer );
1895
1896         // Close the parent
1897         mlt_consumer_close( consumer );
1898
1899         // Free the memory
1900         free( consumer );
1901 }